US8693962B2 - Analog power amplifier predistortion methods and apparatus - Google Patents
Analog power amplifier predistortion methods and apparatus Download PDFInfo
- Publication number
- US8693962B2 US8693962B2 US12/203,064 US20306408A US8693962B2 US 8693962 B2 US8693962 B2 US 8693962B2 US 20306408 A US20306408 A US 20306408A US 8693962 B2 US8693962 B2 US 8693962B2
- Authority
- US
- United States
- Prior art keywords
- analog
- signal
- digital
- correction signal
- phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active, expires
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
- H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/57—Separate feedback of real and complex signals being present
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
- H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
- H03F2201/3215—To increase the output power or efficiency
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
- H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
- H03F2201/3233—Adaptive predistortion using lookup table, e.g. memory, RAM, ROM, LUT, to generate the predistortion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
- H04B2001/0425—Circuits with power amplifiers with linearisation using predistortion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Amplifiers (AREA)
Abstract
Description
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/203,064 US8693962B2 (en) | 2006-04-28 | 2008-09-02 | Analog power amplifier predistortion methods and apparatus |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US79582006P | 2006-04-28 | 2006-04-28 | |
US11/799,239 US8064850B2 (en) | 2002-05-01 | 2007-04-30 | High efficiency linearization power amplifier for wireless communication |
US96912707P | 2007-08-30 | 2007-08-30 | |
US12/203,064 US8693962B2 (en) | 2006-04-28 | 2008-09-02 | Analog power amplifier predistortion methods and apparatus |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/799,239 Continuation US8064850B2 (en) | 2002-05-01 | 2007-04-30 | High efficiency linearization power amplifier for wireless communication |
Publications (2)
Publication Number | Publication Date |
---|---|
US20090085658A1 US20090085658A1 (en) | 2009-04-02 |
US8693962B2 true US8693962B2 (en) | 2014-04-08 |
Family
ID=40507518
Family Applications (7)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/799,239 Expired - Lifetime US8064850B2 (en) | 2002-05-01 | 2007-04-30 | High efficiency linearization power amplifier for wireless communication |
US12/203,064 Active 2029-09-21 US8693962B2 (en) | 2006-04-28 | 2008-09-02 | Analog power amplifier predistortion methods and apparatus |
US13/301,224 Expired - Lifetime US8620234B2 (en) | 2002-05-01 | 2011-11-21 | High efficiency linearization power amplifier for wireless communication |
US14/095,891 Expired - Lifetime US9054758B2 (en) | 2002-05-01 | 2013-12-03 | High efficiency linearization power amplifier for wireless communication |
US14/691,152 Expired - Lifetime US9742446B2 (en) | 2002-05-01 | 2015-04-20 | High efficiency linearization power amplifier for wireless communication |
US15/682,431 Expired - Lifetime US10305521B2 (en) | 2002-05-01 | 2017-08-21 | High efficiency linearization power amplifier for wireless communication |
US16/388,680 Abandoned US20200083914A1 (en) | 2002-05-01 | 2019-04-18 | High efficiency linearization power amplifier for wireless communication |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/799,239 Expired - Lifetime US8064850B2 (en) | 2002-05-01 | 2007-04-30 | High efficiency linearization power amplifier for wireless communication |
Family Applications After (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/301,224 Expired - Lifetime US8620234B2 (en) | 2002-05-01 | 2011-11-21 | High efficiency linearization power amplifier for wireless communication |
US14/095,891 Expired - Lifetime US9054758B2 (en) | 2002-05-01 | 2013-12-03 | High efficiency linearization power amplifier for wireless communication |
US14/691,152 Expired - Lifetime US9742446B2 (en) | 2002-05-01 | 2015-04-20 | High efficiency linearization power amplifier for wireless communication |
US15/682,431 Expired - Lifetime US10305521B2 (en) | 2002-05-01 | 2017-08-21 | High efficiency linearization power amplifier for wireless communication |
US16/388,680 Abandoned US20200083914A1 (en) | 2002-05-01 | 2019-04-18 | High efficiency linearization power amplifier for wireless communication |
Country Status (2)
Country | Link |
---|---|
US (7) | US8064850B2 (en) |
CN (1) | CN101479956B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9712343B2 (en) | 2015-06-19 | 2017-07-18 | Andrew Wireless Systems Gmbh | Scalable telecommunications system |
US10887079B1 (en) | 2019-09-26 | 2021-01-05 | Corning Research & Development Corporation | Digital predistortion (DPD) timing alignment in a remote unit(s) for a wireless communications system (WCS) |
US11190230B1 (en) | 2020-05-29 | 2021-11-30 | Corning Research & Development Corporation | Wide bandwidth digital pre-distortion (DPD) in a remote unit(s) for a wireless communications system (WCS) |
Families Citing this family (99)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8064850B2 (en) | 2002-05-01 | 2011-11-22 | Dali Systems Co., Ltd. | High efficiency linearization power amplifier for wireless communication |
US8380143B2 (en) | 2002-05-01 | 2013-02-19 | Dali Systems Co. Ltd | Power amplifier time-delay invariant predistortion methods and apparatus |
US8811917B2 (en) * | 2002-05-01 | 2014-08-19 | Dali Systems Co. Ltd. | Digital hybrid mode power amplifier system |
US8472897B1 (en) | 2006-12-22 | 2013-06-25 | Dali Systems Co. Ltd. | Power amplifier predistortion methods and apparatus |
US6985704B2 (en) | 2002-05-01 | 2006-01-10 | Dali Yang | System and method for digital memorized predistortion for wireless communication |
AU2005251169B2 (en) * | 2004-05-26 | 2010-07-15 | Zboost, Llc | Wireless repeater for a duplex communication system implementing a protection based on oscillation detection |
US8050649B2 (en) * | 2005-08-30 | 2011-11-01 | Qualcomm Incorporated | Downconversion mixer with IM2 cancellation |
US8411709B1 (en) | 2006-11-27 | 2013-04-02 | Marvell International Ltd. | Use of previously buffered state information to decode in an hybrid automatic repeat request (H-ARQ) transmission mode |
US9026067B2 (en) * | 2007-04-23 | 2015-05-05 | Dali Systems Co. Ltd. | Remotely reconfigurable power amplifier system and method |
CN104202279A (en) | 2006-12-26 | 2014-12-10 | 大力系统有限公司 | Method and system for baseband predistortion linearization in multi-channel wideband communication systems |
CN103997301B (en) * | 2007-01-26 | 2018-09-28 | 大力系统有限公司 | The pre-distortion method and device of power amplifier time-delay invariant |
US8274332B2 (en) | 2007-04-23 | 2012-09-25 | Dali Systems Co. Ltd. | N-way Doherty distributed power amplifier with power tracking |
US7688135B2 (en) * | 2007-04-23 | 2010-03-30 | Dali Systems Co. Ltd. | N-way Doherty distributed power amplifier |
US8224266B2 (en) * | 2007-08-30 | 2012-07-17 | Dali Systems Co., Ltd. | Power amplifier predistortion methods and apparatus using envelope and phase detector |
US8897393B1 (en) | 2007-10-16 | 2014-11-25 | Marvell International Ltd. | Protected codebook selection at receiver for transmit beamforming |
US8542725B1 (en) | 2007-11-14 | 2013-09-24 | Marvell International Ltd. | Decision feedback equalization for signals having unequally distributed patterns |
CN102150361B (en) | 2007-12-07 | 2016-11-09 | 大力系统有限公司 | The RF digital pre-distortion that base band derives |
JP5056490B2 (en) * | 2008-03-10 | 2012-10-24 | 富士通株式会社 | Distortion compensation coefficient updating apparatus and distortion compensation amplifier |
US8565325B1 (en) | 2008-03-18 | 2013-10-22 | Marvell International Ltd. | Wireless device communication in the 60GHz band |
CN102089671B (en) | 2008-07-11 | 2015-08-26 | 皇家飞利浦电子股份有限公司 | There is the digital amplifier of feedforward and FEEDBACK CONTROL |
US8761261B1 (en) | 2008-07-29 | 2014-06-24 | Marvell International Ltd. | Encoding using motion vectors |
US8498342B1 (en) | 2008-07-29 | 2013-07-30 | Marvell International Ltd. | Deblocking filtering |
CN102113221A (en) * | 2008-08-05 | 2011-06-29 | 富士通株式会社 | Transmission device and adjustment value measurement method |
US8384476B2 (en) * | 2008-08-11 | 2013-02-26 | Qualcomm, Incorporated | Adaptive digital predistortion of complex modulated waveform using peak and RMS voltage feedback from the output of a power amplifier |
US8345533B1 (en) | 2008-08-18 | 2013-01-01 | Marvell International Ltd. | Frame synchronization techniques |
US8681893B1 (en) | 2008-10-08 | 2014-03-25 | Marvell International Ltd. | Generating pulses using a look-up table |
US8462881B2 (en) * | 2008-12-31 | 2013-06-11 | Ubidyne, Inc. | Method for digitally predistorting a payload signal and radio station incorporating the method |
EP2204903B1 (en) * | 2008-12-31 | 2012-07-18 | Ubidyne Inc. | A radio station and active antenna array |
US8520771B1 (en) * | 2009-04-29 | 2013-08-27 | Marvell International Ltd. | WCDMA modulation |
US8670501B2 (en) * | 2009-12-09 | 2014-03-11 | Texas Instruments Incorporated | Digital pre-distortion of non-linear systems with reduced bandwidth feedback |
CN102939716B (en) * | 2009-12-21 | 2016-02-03 | 大力系统有限公司 | Multi-band wideband power amplifier digital predistortion system and method |
US8351877B2 (en) | 2010-12-21 | 2013-01-08 | Dali Systems Co. Ltfd. | Multi-band wideband power amplifier digital predistorition system and method |
CN101800546B (en) * | 2010-02-09 | 2014-07-02 | 中兴通讯股份有限公司 | Method and device for improving link distortion over-compensation of digital pre-distortion system |
US20110235749A1 (en) * | 2010-03-26 | 2011-09-29 | Peter Kenington | Active antenna array having analogue transmitter linearisation and a method for predistortion of radio signals |
US20110235748A1 (en) * | 2010-03-26 | 2011-09-29 | Peter Kenington | Active antenna array having analogue transmitter linearisation and a method for predistortion of radio signals |
US20110235734A1 (en) * | 2010-03-26 | 2011-09-29 | Peter Kenington | Active antenna array having a single dpd lineariser and a method for predistortion of radio signals |
US8817771B1 (en) | 2010-07-16 | 2014-08-26 | Marvell International Ltd. | Method and apparatus for detecting a boundary of a data frame in a communication network |
CN103180844B (en) | 2010-08-17 | 2017-10-03 | 大力系统有限公司 | Neutral host architecture for distributing antenna system |
US8682338B2 (en) | 2010-09-14 | 2014-03-25 | Dali Systems Co., Ltd. | Remotely reconfigurable distributed antenna system and methods |
WO2012138795A1 (en) | 2011-04-04 | 2012-10-11 | The Trustees Of Columbia University In The City Of New York | Circuits for providing class-e power amplifiers |
US9621286B2 (en) * | 2011-06-29 | 2017-04-11 | Tektronix, Inc. | Apparatus for generation of corrected vector wideband RF signals |
WO2013053087A1 (en) * | 2011-10-09 | 2013-04-18 | 中国科学院微电子研究所 | Voltage-controlled oscillator device and correction method for voltage-controlled oscillator |
US8805304B2 (en) * | 2011-10-25 | 2014-08-12 | Scintera Networks Llc | Linearization of broadband power amplifiers |
US9362876B2 (en) | 2011-12-22 | 2016-06-07 | Southern Methodist University | Look-up table digital predistortion technique for high-voltage power amplifiers in ultrasonic applications |
DE202013012858U1 (en) | 2012-08-09 | 2021-05-07 | Axel Wireless Ltd. | Capacity-centered digital distributed antenna system |
KR102143564B1 (en) | 2012-11-26 | 2020-08-11 | 콤스코프 테크놀로지스 엘엘씨 | Forward-path digital summation in digital radio frequency transport |
WO2014082072A1 (en) | 2012-11-26 | 2014-05-30 | Adc Telecommunications, Inc. | Timeslot mapping and/or aggregation element for digital radio frequency transport architecture |
KR102349252B1 (en) | 2012-11-26 | 2022-01-07 | 콤스코프 테크놀로지스 엘엘씨 | Flexible, reconfigurable multipoint-to-multipoint digital radio frequency transport architecture |
CN103222243B (en) * | 2012-12-05 | 2016-05-25 | 华为技术有限公司 | A kind of method of data processing and device |
US9680423B2 (en) * | 2013-03-13 | 2017-06-13 | Analog Devices Global | Under-sampling digital pre-distortion architecture |
US9276617B2 (en) * | 2013-03-15 | 2016-03-01 | Analog Devices, Inc. | Radio frequency domain digital pre-distortion |
US8948301B2 (en) * | 2013-05-24 | 2015-02-03 | Telefonaktiebolaget L M Ericsson (Publ) | Multi-band radio-frequency digital predistortion |
US10056924B2 (en) | 2013-08-19 | 2018-08-21 | Analog Devices, Inc. | High output power digital-to-analog converter system |
US8970418B1 (en) | 2013-08-19 | 2015-03-03 | Analog Devices, Inc. | High output power digital-to-analog converter system |
US9750082B2 (en) | 2013-10-07 | 2017-08-29 | Commscope Technologies Llc | Systems and methods for noise floor optimization in distributed antenna system with direct digital interface to base station |
US9787457B2 (en) | 2013-10-07 | 2017-10-10 | Commscope Technologies Llc | Systems and methods for integrating asynchronous signals in distributed antenna system with direct digital interface to base station |
CN103715595B (en) * | 2013-12-16 | 2018-12-21 | 中国科学院福建物质结构研究所 | A kind of KHZ single-longitudinal-pulse pulse laser feedback control circuit |
US9461675B2 (en) * | 2014-02-25 | 2016-10-04 | Fadhel M. Ghannouchi | System and method for enhanced transmitter efficiency |
US10063197B2 (en) | 2014-03-05 | 2018-08-28 | The Trustees Of Columbia University In The City Of New York | Circuits for power-combined power amplifier arrays |
WO2015177757A1 (en) * | 2014-05-23 | 2015-11-26 | Teko Telecom S.R.L. | Power amplification system for radiofrequency communications |
US9739844B2 (en) * | 2014-07-25 | 2017-08-22 | Qualcomm Incorporated | Guidance and alignment system and methods for electric vehicle wireless charging systems |
US10305577B2 (en) * | 2014-08-22 | 2019-05-28 | Lockheed Martin Corporation | Multi-stage linearizer |
US10075310B2 (en) * | 2014-08-28 | 2018-09-11 | Lockheed Martin Corporation | Adaptive linearizer |
WO2016049002A1 (en) | 2014-09-23 | 2016-03-31 | Axell Wireless Ltd. | Automatic mapping and handling pim and other uplink interferences in digital distributed antenna systems |
US9614541B2 (en) | 2014-10-01 | 2017-04-04 | The Trustees Of Columbia University In The City Of New York | Wireless-transmitter circuits including power digital-to-amplitude converters |
AU2015371287A1 (en) | 2014-12-23 | 2017-06-08 | Axell Wireless Ltd. | Harmonizing noise aggregation and noise management in distributed antenna system |
CN107211429B (en) | 2015-02-05 | 2021-05-28 | 康普技术有限责任公司 | System and method for emulating uplink diversity signals |
WO2016187055A1 (en) * | 2015-05-15 | 2016-11-24 | Crocus Technology Inc. | Mram-based pre-distortion linearization and amplification circuits |
US9590668B1 (en) | 2015-11-30 | 2017-03-07 | NanoSemi Technologies | Digital compensator |
US10110651B2 (en) * | 2016-04-28 | 2018-10-23 | Facebook, Inc. | Video icons |
US9762302B1 (en) | 2016-06-01 | 2017-09-12 | Maxlinear Asia Singapore PTE LTD | Predistortion for hybrid digital/analog precoders |
US9813190B1 (en) * | 2016-07-01 | 2017-11-07 | Intel IP Corporation | Pre-distortion calibration |
EP3462610A4 (en) | 2016-07-08 | 2019-06-19 | Huawei Technologies Co., Ltd. | Digital pre-distortion processing device |
WO2018067969A1 (en) | 2016-10-07 | 2018-04-12 | Nanosemi, Inc. | Beam steering digital predistortion |
CN110574288A (en) | 2017-02-25 | 2019-12-13 | 纳诺塞米有限公司 | Multi-band digital predistorter |
EP3531644B1 (en) * | 2017-02-28 | 2020-12-23 | Huawei Technologies Co., Ltd. | Transmitter and digital pre-distortion calibration method |
US10141961B1 (en) | 2017-05-18 | 2018-11-27 | Nanosemi, Inc. | Passive intermodulation cancellation |
US10931318B2 (en) * | 2017-06-09 | 2021-02-23 | Nanosemi, Inc. | Subsampled linearization system |
US11115067B2 (en) | 2017-06-09 | 2021-09-07 | Nanosemi, Inc. | Multi-band linearization system |
US10581470B2 (en) | 2017-06-09 | 2020-03-03 | Nanosemi, Inc. | Linearization system |
US11323188B2 (en) | 2017-07-12 | 2022-05-03 | Nanosemi, Inc. | Monitoring systems and methods for radios implemented with digital predistortion |
CN107450417B (en) * | 2017-09-21 | 2023-04-25 | 广东电网有限责任公司电力科学研究院 | Nonlinear signal generation method and nonlinear signal generator |
US11303251B2 (en) | 2017-10-02 | 2022-04-12 | Nanosemi, Inc. | Digital predistortion adjustment based on determination of load condition characteristics |
US11211902B2 (en) * | 2017-12-14 | 2021-12-28 | Telefonaktiebolaget Lm Ericsson (Publ) | Linearization of non-linear amplifiers |
US10644657B1 (en) | 2018-05-11 | 2020-05-05 | Nanosemi, Inc. | Multi-band digital compensator for a non-linear system |
CN112385142B (en) | 2018-05-11 | 2024-04-05 | 纳诺塞米有限公司 | Digital compensator for nonlinear systems |
US10432240B1 (en) * | 2018-05-22 | 2019-10-01 | Micron Technology, Inc. | Wireless devices and systems including examples of compensating power amplifier noise |
US11863210B2 (en) | 2018-05-25 | 2024-01-02 | Nanosemi, Inc. | Linearization with level tracking |
WO2019227020A1 (en) | 2018-05-25 | 2019-11-28 | Nanosemi, Inc. | Digital predistortion in varying operating conditions |
US10931238B2 (en) | 2018-05-25 | 2021-02-23 | Nanosemi, Inc. | Linearization with envelope tracking or average power tracking |
TWI696344B (en) * | 2018-11-16 | 2020-06-11 | 財團法人工業技術研究院 | Linearity improving system and linearity improving method |
US11018633B2 (en) * | 2019-04-18 | 2021-05-25 | Samsung Electronics Co., Ltd | Method and apparatus for calibrating digital pre-distortion of cellular transmitter |
US10763905B1 (en) | 2019-06-07 | 2020-09-01 | Micron Technology, Inc. | Wireless devices and systems including examples of mismatch correction scheme |
US11329687B2 (en) * | 2020-01-20 | 2022-05-10 | Texas Instruments Incorporated | Transceiver circuit with digital pre-distortion (DPD) options |
CN115298978B (en) * | 2020-03-18 | 2023-10-27 | 哲库科技(上海)有限公司 | Baseband chip for harmonic interference cancellation and wireless communication method |
US10972139B1 (en) | 2020-04-15 | 2021-04-06 | Micron Technology, Inc. | Wireless devices and systems including examples of compensating power amplifier noise with neural networks or recurrent neural networks |
US10992326B1 (en) | 2020-05-19 | 2021-04-27 | Nanosemi, Inc. | Buffer management for adaptive digital predistortion |
US11496341B2 (en) | 2020-08-13 | 2022-11-08 | Micron Technology, Inc. | Wireless devices and systems including examples of compensating I/Q imbalance with neural networks or recurrent neural networks |
CN113285727B (en) * | 2021-06-02 | 2022-07-22 | 恒玄科技(北京)有限公司 | Wireless signal transmitting device and processing method thereof |
Citations (89)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4638248A (en) | 1985-06-10 | 1987-01-20 | Massachusetts Institute Of Technology | Methods and apparatus for measuring relative gain and phase of voltage input signals versus voltage output signals |
US4700151A (en) | 1985-03-20 | 1987-10-13 | Nec Corporation | Modulation system capable of improving a transmission system |
US4890300A (en) | 1987-04-28 | 1989-12-26 | Racal Communications Equipment Limited | Radio transmitters |
US4929906A (en) | 1989-01-23 | 1990-05-29 | The Boeing Company | Amplifier linearization using down/up conversion |
US5049832A (en) | 1990-04-20 | 1991-09-17 | Simon Fraser University | Amplifier linearization by adaptive predistortion |
US5121412A (en) | 1989-01-03 | 1992-06-09 | Motorola, Inc. | All-digital quadrature modulator |
US5132639A (en) | 1989-09-07 | 1992-07-21 | Ortel Corporation | Predistorter for linearization of electronic and optical signals |
US5396190A (en) | 1993-04-20 | 1995-03-07 | Mitsubishi Denki Kabushiki Kaisha | Circuit for compensating for nonlinear distortion in transmit power amplifier |
US5486789A (en) | 1995-02-28 | 1996-01-23 | Motorola, Inc. | Apparatus and method for providing a baseband digital error signal in an adaptive predistorter |
US5579342A (en) | 1994-09-22 | 1996-11-26 | Her Majesty The Queen In Right Of Canada As Represented By The Minister Of Communications | Pre-compensated frequency modulation (PFM) |
US5675287A (en) | 1996-02-12 | 1997-10-07 | Motorola, Inc. | Digital DC correction circuit for a linear transmitter |
US5678198A (en) | 1991-05-22 | 1997-10-14 | Southwestern Bell Technology Resources, Inc. | System for controlling signal level at both ends of a transmission link, based upon a detected value |
US5732333A (en) | 1996-02-14 | 1998-03-24 | Glenayre Electronics, Inc. | Linear transmitter using predistortion |
US5757229A (en) | 1996-06-28 | 1998-05-26 | Motorola, Inc. | Bias circuit for a power amplifier |
US5786728A (en) | 1995-06-30 | 1998-07-28 | Nokia Mobile Phones, Ltd. | Cuber based predistortion circuit and mobile station using the same |
US5937011A (en) | 1996-03-26 | 1999-08-10 | Airnet Communications Corp. | Multi-carrier high power amplifier using digital pre-distortion |
US5936464A (en) | 1997-11-03 | 1999-08-10 | Motorola, Inc. | Method and apparatus for reducing distortion in a high efficiency power amplifier |
US5949283A (en) | 1996-09-20 | 1999-09-07 | Spectrian | Adaptive digital predistortion linearization and feed-forward correction of RF power amplifier |
US5959499A (en) | 1997-09-30 | 1999-09-28 | Motorola, Inc. | Predistortion system and method using analog feedback loop for look-up table training |
US5963549A (en) | 1997-12-10 | 1999-10-05 | L-3 Communications Corporation | Fixed wireless loop system having baseband combiner predistortion summing table |
US6055418A (en) | 1996-07-05 | 2000-04-25 | Thomcast Communications, Inc. | Computer program product configured to control modular transmission system components |
US6054896A (en) | 1998-12-17 | 2000-04-25 | Datum Telegraphic Inc. | Controller and associated methods for a linc linear power amplifier |
US6091941A (en) | 1995-09-19 | 2000-07-18 | Fujitsu Limited | Radio apparatus |
US6240144B1 (en) | 1998-08-06 | 2001-05-29 | Samsung Electronics Co., Ltd. | Apparatus and method of linearizing a power amplifier in a mobile radio communication system |
US6242979B1 (en) | 2000-02-23 | 2001-06-05 | Motorola, Inc. | Linearization using parallel cancellation in linear power amplifier |
US6246286B1 (en) | 1999-10-26 | 2001-06-12 | Telefonaktiebolaget Lm Ericsson | Adaptive linearization of power amplifiers |
US6246865B1 (en) | 1997-02-04 | 2001-06-12 | Samsung Electronics Co., Ltd. | Device and method for controlling distortion characteristic of predistorter |
US6275685B1 (en) | 1998-12-10 | 2001-08-14 | Nortel Networks Limited | Linear amplifier arrangement |
US6301579B1 (en) | 1998-10-20 | 2001-10-09 | Silicon Graphics, Inc. | Method, system, and computer program product for visualizing a data structure |
US20020034260A1 (en) | 2000-09-15 | 2002-03-21 | Lg Electronics Inc. | Adaptive predistortion transmitter |
US20020044014A1 (en) | 1999-07-13 | 2002-04-18 | Wright Andrew S. | Amplifier measurement and modeling processes for use in generating predistortion parameters |
US6400774B1 (en) | 1997-12-10 | 2002-06-04 | Matsushita Electric Industrial Co., Ltd. | Nonlinearity-caused distortion compensating system |
US20020080891A1 (en) | 2000-12-27 | 2002-06-27 | Lg Electronics | Base station transmitter having digital predistorter and predistortion method thereof |
US6424225B1 (en) | 2000-11-27 | 2002-07-23 | Conexant Systems, Inc. | Power amplifier circuit for providing constant bias current over a wide temperature range |
US20020101937A1 (en) | 1998-06-26 | 2002-08-01 | Franklin P. Antonio | Predistortion technique for high power amplifiers |
US20020101938A1 (en) | 2001-02-01 | 2002-08-01 | Masato Horaguchi | Predistortion type distortion compensation apparatus |
US20020186783A1 (en) | 2001-06-07 | 2002-12-12 | Motorola, Inc | Amplifier predistortion system and method |
US20020187761A1 (en) | 2001-02-21 | 2002-12-12 | Solid Technologies, Inc. | Device and method for compensating for nonlinearity of power amplifier with redistortion in if band |
US20020193085A1 (en) | 2001-06-15 | 2002-12-19 | Telefonaktiebolaget Lm Ericsson | Systems and methods for amplification of a communication signal |
US6512417B2 (en) | 2000-05-11 | 2003-01-28 | Nortel Networks Limited | Linear amplifier arrangement |
US6552634B1 (en) | 1997-08-25 | 2003-04-22 | Frederick Herbert Raab | Wideband, minimum-rating filters and multicouplers for power amplifiers |
US20030095608A1 (en) | 2001-11-16 | 2003-05-22 | Koninklijke Philips Electronics N.V. | Transmitter with transmitter chain phase adjustment on the basis of pre-stored phase information |
US6625429B1 (en) | 1999-07-02 | 2003-09-23 | Nec Corporation | Mobile radio communication apparatus |
US20030179829A1 (en) | 2002-03-19 | 2003-09-25 | Motorola, Inc. | Method and apparatus using base band transformation to improve transmitter performance |
US20030179830A1 (en) | 2002-03-25 | 2003-09-25 | Eidson Donald B. | Efficient, high fidelity transmission of modulation schemes through power-constrained remote relay stations by local transmit predistortion and local receiver feedback |
US6639050B1 (en) | 1997-07-21 | 2003-10-28 | Ohio University | Synthetic genes for plant gums and other hydroxyproline-rich glycoproteins |
US20030207680A1 (en) * | 2002-05-01 | 2003-11-06 | Dali Yang | System and method for digital memorized predistortion for wireless communication |
US20040017859A1 (en) | 2002-07-25 | 2004-01-29 | Sills James A. | Transmitter with limited spectral regrowth and method therefor |
US6697436B1 (en) | 1999-07-13 | 2004-02-24 | Pmc-Sierra, Inc. | Transmission antenna array system with predistortion |
US6703897B2 (en) | 2001-12-26 | 2004-03-09 | Nortel Networks Limited | Methods of optimising power amplifier efficiency and closed-loop power amplifier controllers |
US6731904B1 (en) * | 1999-07-20 | 2004-05-04 | Andrew Corporation | Side-to-side repeater |
US6741663B1 (en) | 1998-04-30 | 2004-05-25 | Nokia Corporation | Linearization method for amplifier, and amplifier arrangement |
US6747649B1 (en) | 2002-03-19 | 2004-06-08 | Aechelon Technology, Inc. | Terrain rendering in a three-dimensional environment |
US6751447B1 (en) | 1999-12-30 | 2004-06-15 | Samsung Electronics Cop., Ltd. | Adaptive digital pre-distortion circuit using output reference signal and method of operation |
US20040240585A1 (en) | 2001-06-15 | 2004-12-02 | John Bishop | Time alignment of signals |
US20050079834A1 (en) | 2002-05-31 | 2005-04-14 | Toru Maniwa | Table reference type predistorter |
US20050159117A1 (en) | 2002-01-15 | 2005-07-21 | Igor Bausov | Class-L power-output amplifier |
US6963242B2 (en) | 2003-07-31 | 2005-11-08 | Andrew Corporation | Predistorter for phase modulated signals with low peak to average ratios |
US20050262498A1 (en) | 2004-05-20 | 2005-11-24 | Ferguson Alan L | Systems and methods for remotely modifying software on a work machine |
US6983025B2 (en) | 2001-04-11 | 2006-01-03 | Tropian, Inc. | High quality power ramping in a communications transmitter |
US20060012426A1 (en) | 2004-07-14 | 2006-01-19 | Raytheon Company | Performing remote power amplifier linearization |
US7035345B2 (en) | 2001-06-08 | 2006-04-25 | Polyvalor S.E.C. | Adaptive predistortion device and method using digital receiver |
US7042287B2 (en) | 2003-07-23 | 2006-05-09 | Northrop Grumman Corporation | System and method for reducing dynamic range and improving linearity in an amplication system |
US7061314B2 (en) | 2002-02-01 | 2006-06-13 | Youngwoo Kwon | High linearity doherty communication amplifier with phase control |
US7064606B2 (en) | 2003-03-28 | 2006-06-20 | Andrew Corporation | High efficiency amplifier and method of designing same |
US7079818B2 (en) | 2002-02-12 | 2006-07-18 | Broadcom Corporation | Programmable mutlistage amplifier and radio applications thereof |
US7103329B1 (en) | 2001-10-25 | 2006-09-05 | Rockwell Collins, Inc. | Adaptive feedback channel for radio frequency power amplifiers |
US7102442B2 (en) | 2004-04-28 | 2006-09-05 | Sony Ericsson Mobile Communications Ab | Wireless terminals, methods and computer program products with transmit power amplifier input power regulation |
US7104310B2 (en) | 2004-12-27 | 2006-09-12 | Hunter Automated Machinery Corporation | Mold making machine with separated safety work zones |
US7106806B1 (en) | 1999-06-30 | 2006-09-12 | Andrew Corporation | Reducing distortion of signals |
US7109792B2 (en) | 2003-09-17 | 2006-09-19 | Andrew Corporation | Table-based pre-distortion for amplifier systems |
US7109998B2 (en) | 2001-10-03 | 2006-09-19 | Sun Microsystems, Inc. | Stationary semantic zooming |
US20060217083A1 (en) * | 2005-03-22 | 2006-09-28 | Braithwaite Richard N | Rf power amplifier system employing an analog predistortion module using zero crossings |
US20060270366A1 (en) | 2005-05-24 | 2006-11-30 | Dmitriy Rozenblit | Dual voltage regulator for a supply voltage controlled power amplifier in a closed power control loop |
US7151913B2 (en) * | 2003-06-30 | 2006-12-19 | M/A-Com, Inc. | Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture |
US7158765B2 (en) | 2001-07-31 | 2007-01-02 | Agere Systems, Inc. | Method and apparatus for controlling power of a transmitted signal |
US7193472B2 (en) | 2004-04-14 | 2007-03-20 | Mitsubishi Denki Kabushiki Kaisha | Power amplifier |
US20070075780A1 (en) | 2005-10-05 | 2007-04-05 | Enver Krvavac | Apparatus and method for adaptive biasing of a Doherty amplifier |
US7248642B1 (en) | 2002-02-05 | 2007-07-24 | Andrew Corporation | Frequency-dependent phase pre-distortion for reducing spurious emissions in communication networks |
US20070171234A1 (en) | 2006-01-24 | 2007-07-26 | Roger Crawfis | System and method for asynchronous continuous-level-of-detail texture mapping for large-scale terrain rendering |
US7259630B2 (en) | 2003-07-23 | 2007-08-21 | Andrew Corporation | Elimination of peak clipping and improved efficiency for RF power amplifiers with a predistorter |
US20070241812A1 (en) | 2002-05-01 | 2007-10-18 | Dali Systems Co. Ltd. | High efficiency linearization power amplifier for wireless communication |
US7295819B2 (en) * | 2003-03-11 | 2007-11-13 | Andrew Corporation | Signal sample acquisition techniques |
US7321636B2 (en) | 2001-05-31 | 2008-01-22 | Magnolia Broadband Inc. | Communication device with smart antenna using a quality-indication signal |
US7321635B2 (en) | 2002-08-16 | 2008-01-22 | Andrew Corporation | Linearization of amplifiers using baseband detection and non-baseband pre-distortion |
US7372918B2 (en) | 2003-09-30 | 2008-05-13 | Infineon Technologies Ag | Transmission device with adaptive digital predistortion, transceiver with transmission device, and method for operating a transmission device |
US7469491B2 (en) | 2004-01-27 | 2008-12-30 | Crestcom, Inc. | Transmitter predistortion circuit and method therefor |
US7831221B2 (en) | 2005-12-13 | 2010-11-09 | Andrew Llc | Predistortion system and amplifier for addressing group delay modulation |
USRE42287E1 (en) | 1998-03-17 | 2011-04-12 | Pixar | Stochastic level of detail in computer animation |
Family Cites Families (56)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2642243B1 (en) | 1989-01-24 | 1991-04-19 | Labo Electronique Physique | ADAPTIVE PREDISTORSION CIRCUIT |
FR2652965A1 (en) | 1989-10-06 | 1991-04-12 | Philips Electronique Lab | PREDISTORSION DEVICE FOR DIGITAL TRANSMISSION SYSTEM. |
US5452473A (en) | 1994-02-28 | 1995-09-19 | Qualcomm Incorporated | Reverse link, transmit power correction and limitation in a radiotelephone system |
JP2967699B2 (en) * | 1995-03-06 | 1999-10-25 | 日本電気株式会社 | Transmission device |
US5870668A (en) * | 1995-08-18 | 1999-02-09 | Fujitsu Limited | Amplifier having distortion compensation and base station for radio communication using the same |
US6356555B1 (en) | 1995-08-25 | 2002-03-12 | Terayon Communications Systems, Inc. | Apparatus and method for digital data transmission using orthogonal codes |
US5589797A (en) | 1995-09-26 | 1996-12-31 | Lucent Technologies Inc. | Low distortion amplifier |
US5740520A (en) | 1996-04-03 | 1998-04-14 | State Of Israel | Channel correction transceiver |
AU3339397A (en) * | 1996-06-19 | 1998-01-07 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. | Pre-distortion for a non-linear transmission path in the high frequency range |
US5920808A (en) | 1996-12-12 | 1999-07-06 | Glenayre Electronics, Inc. | Method and apparatus for reducing key-up distortion by pre-heating transistors |
US5923712A (en) | 1997-05-05 | 1999-07-13 | Glenayre Electronics, Inc. | Method and apparatus for linear transmission by direct inverse modeling |
KR100307665B1 (en) | 1997-05-23 | 2001-10-19 | 하재홍 | Lock and key system employing an id code |
KR100251561B1 (en) * | 1997-06-19 | 2000-04-15 | 윤종용 | Apparatus and method for linearizing tx signal in digital communication system |
US6081158A (en) * | 1997-06-30 | 2000-06-27 | Harris Corporation | Adaptive pre-distortion apparatus for linearizing an amplifier output within a data transmission system |
US6252912B1 (en) | 1997-12-24 | 2001-06-26 | General Dynamics Government Systems Corporation | Adaptive predistortion system |
US5959500A (en) | 1998-01-26 | 1999-09-28 | Glenayre Electronics, Inc. | Model-based adaptive feedforward amplifier linearizer |
GB9811381D0 (en) | 1998-05-27 | 1998-07-22 | Nokia Mobile Phones Ltd | Predistortion control for power reduction |
US6236267B1 (en) | 1998-12-29 | 2001-05-22 | International Business Machines Corporation | Linearization for power amplifiers using feed-forward and feedback control |
US6614854B1 (en) | 1999-05-28 | 2003-09-02 | Carriercomm, Inc. | System and method for adaptive predistortion |
IT1313906B1 (en) | 1999-06-15 | 2002-09-26 | Cit Alcatel | ADAPTIVE DIGITAL PRECORRECTION OF NON-LINEARITY INTRODUCED BY POWER AMPLICATORS. |
US6587514B1 (en) | 1999-07-13 | 2003-07-01 | Pmc-Sierra, Inc. | Digital predistortion methods for wideband amplifiers |
JP3381689B2 (en) | 1999-11-30 | 2003-03-04 | 日本電気株式会社 | Nonlinear distortion compensation circuit, transmission device using the same, and mobile communication device |
JP4183364B2 (en) * | 1999-12-28 | 2008-11-19 | 富士通株式会社 | Distortion compensation device |
GB2359679B (en) | 2000-02-24 | 2004-03-10 | Wireless Systems Int Ltd | Amplifier |
US6489846B2 (en) | 2000-05-25 | 2002-12-03 | Sony Corporation | Distortion compensating device and distortion compensating method |
JP4326673B2 (en) * | 2000-06-06 | 2009-09-09 | 富士通株式会社 | Method for starting communication apparatus having nonlinear distortion compensation apparatus |
JP2002009557A (en) | 2000-06-21 | 2002-01-11 | Matsushita Electric Ind Co Ltd | Linear compensation amplifier |
US6898252B1 (en) | 2000-07-21 | 2005-05-24 | Intel Corporation | IQ mismatch cancellation |
JP3590571B2 (en) | 2000-08-30 | 2004-11-17 | 株式会社日立国際電気 | Distortion compensator |
US20020179830A1 (en) * | 2000-11-01 | 2002-12-05 | Pearson Robert M. | Halbach Dipole magnet shim system |
US6903604B2 (en) | 2001-06-07 | 2005-06-07 | Lucent Technologies Inc. | Method and apparatus for modeling and estimating the characteristics of a power amplifier |
US7203247B2 (en) | 2001-07-23 | 2007-04-10 | Agere Systems Inc. | Digital predistortion technique for WCDMA wireless communication system and method of operation thereof |
US20030058959A1 (en) | 2001-09-25 | 2003-03-27 | Caly Networks. | Combined digital adaptive pre-distorter and pre-equalizer system for modems in link hopping radio networks |
US6657510B2 (en) * | 2001-11-27 | 2003-12-02 | Harris Corporation | Corrective phase quadrature modulator system and method |
AU2003213930A1 (en) | 2002-03-26 | 2003-10-08 | Her Majesty In Right Of Canada As Represented By The Minister Of Industry | Adaptive predistorter based on the probability distribution function of the output amplitude |
US8380143B2 (en) | 2002-05-01 | 2013-02-19 | Dali Systems Co. Ltd | Power amplifier time-delay invariant predistortion methods and apparatus |
US8472897B1 (en) | 2006-12-22 | 2013-06-25 | Dali Systems Co. Ltd. | Power amplifier predistortion methods and apparatus |
DE60235127D1 (en) * | 2002-10-31 | 2010-03-04 | Zte Corp | METHOD AND SYSTEM FOR BROADBAND PRE-DECAYING LINEARIZATION |
US20040142667A1 (en) | 2003-01-21 | 2004-07-22 | Lochhead Donald Laird | Method of correcting distortion in a power amplifier |
US7123890B2 (en) * | 2003-03-11 | 2006-10-17 | Andrew Corporation | Signal sample acquisition techniques |
US7038539B2 (en) | 2003-05-06 | 2006-05-02 | Powerwave Technologies, Inc. | RF amplifier employing active load linearization |
US7068101B2 (en) | 2003-07-03 | 2006-06-27 | Icefyre Semiconductor Corporation | Adaptive predistortion for a transmit system |
JP4394409B2 (en) | 2003-09-25 | 2010-01-06 | 株式会社日立国際電気 | Predistortion type amplifier with distortion compensation function |
US7023273B2 (en) | 2003-10-06 | 2006-04-04 | Andrew Corporation | Architecture and implementation methods of digital predistortion circuitry |
US7071777B2 (en) | 2003-12-02 | 2006-07-04 | Motorola, Inc. | Digital memory-based predistortion technique |
JP4467319B2 (en) | 2004-01-29 | 2010-05-26 | 株式会社日立国際電気 | Predistorter |
US6998909B1 (en) | 2004-02-17 | 2006-02-14 | Altera Corporation | Method to compensate for memory effect in lookup table based digital predistorters |
KR101126401B1 (en) * | 2004-05-11 | 2012-03-29 | 삼성전자주식회사 | Digital Predistortion Apparatus and Method in Power Amplifier |
JP4214098B2 (en) | 2004-09-09 | 2009-01-28 | 株式会社ルネサステクノロジ | Sigma delta transmission circuit and transceiver using the same |
US7463697B2 (en) | 2004-09-28 | 2008-12-09 | Intel Corporation | Multicarrier transmitter and methods for generating multicarrier communication signals with power amplifier predistortion and linearization |
DE102005013881A1 (en) * | 2005-03-24 | 2006-09-28 | Infineon Technologies Ag | Signal processing method for portable radio involves amplifying carrier signal after amplitude of carrier signal is modulated based on distorted first component or first component |
US8195103B2 (en) | 2006-02-15 | 2012-06-05 | Texas Instruments Incorporated | Linearization of a transmit amplifier |
WO2008105775A1 (en) | 2006-04-28 | 2008-09-04 | Dali Systems Co. Ltd | High efficiency linearization power amplifier for wireless communication |
US7733978B2 (en) | 2006-05-26 | 2010-06-08 | Industrial Technology Research Institute | Apparatus and method of dynamically adapting the LUT spacing for linearizing a power amplifier |
WO2008015775A1 (en) | 2006-07-31 | 2008-02-07 | Techno Polymer Co., Ltd. | Heat dissipating chassis and heat dissipating case |
US8682338B2 (en) * | 2010-09-14 | 2014-03-25 | Dali Systems Co., Ltd. | Remotely reconfigurable distributed antenna system and methods |
-
2007
- 2007-04-30 US US11/799,239 patent/US8064850B2/en not_active Expired - Lifetime
- 2007-04-30 CN CN2007800238751A patent/CN101479956B/en active Active
-
2008
- 2008-09-02 US US12/203,064 patent/US8693962B2/en active Active
-
2011
- 2011-11-21 US US13/301,224 patent/US8620234B2/en not_active Expired - Lifetime
-
2013
- 2013-12-03 US US14/095,891 patent/US9054758B2/en not_active Expired - Lifetime
-
2015
- 2015-04-20 US US14/691,152 patent/US9742446B2/en not_active Expired - Lifetime
-
2017
- 2017-08-21 US US15/682,431 patent/US10305521B2/en not_active Expired - Lifetime
-
2019
- 2019-04-18 US US16/388,680 patent/US20200083914A1/en not_active Abandoned
Patent Citations (91)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4700151A (en) | 1985-03-20 | 1987-10-13 | Nec Corporation | Modulation system capable of improving a transmission system |
US4638248A (en) | 1985-06-10 | 1987-01-20 | Massachusetts Institute Of Technology | Methods and apparatus for measuring relative gain and phase of voltage input signals versus voltage output signals |
US4890300A (en) | 1987-04-28 | 1989-12-26 | Racal Communications Equipment Limited | Radio transmitters |
US5121412A (en) | 1989-01-03 | 1992-06-09 | Motorola, Inc. | All-digital quadrature modulator |
US4929906A (en) | 1989-01-23 | 1990-05-29 | The Boeing Company | Amplifier linearization using down/up conversion |
US5132639A (en) | 1989-09-07 | 1992-07-21 | Ortel Corporation | Predistorter for linearization of electronic and optical signals |
US5049832A (en) | 1990-04-20 | 1991-09-17 | Simon Fraser University | Amplifier linearization by adaptive predistortion |
US5678198A (en) | 1991-05-22 | 1997-10-14 | Southwestern Bell Technology Resources, Inc. | System for controlling signal level at both ends of a transmission link, based upon a detected value |
US5396190A (en) | 1993-04-20 | 1995-03-07 | Mitsubishi Denki Kabushiki Kaisha | Circuit for compensating for nonlinear distortion in transmit power amplifier |
US5579342A (en) | 1994-09-22 | 1996-11-26 | Her Majesty The Queen In Right Of Canada As Represented By The Minister Of Communications | Pre-compensated frequency modulation (PFM) |
US5486789A (en) | 1995-02-28 | 1996-01-23 | Motorola, Inc. | Apparatus and method for providing a baseband digital error signal in an adaptive predistorter |
US5786728A (en) | 1995-06-30 | 1998-07-28 | Nokia Mobile Phones, Ltd. | Cuber based predistortion circuit and mobile station using the same |
US6091941A (en) | 1995-09-19 | 2000-07-18 | Fujitsu Limited | Radio apparatus |
US5675287A (en) | 1996-02-12 | 1997-10-07 | Motorola, Inc. | Digital DC correction circuit for a linear transmitter |
US5732333A (en) | 1996-02-14 | 1998-03-24 | Glenayre Electronics, Inc. | Linear transmitter using predistortion |
US5937011A (en) | 1996-03-26 | 1999-08-10 | Airnet Communications Corp. | Multi-carrier high power amplifier using digital pre-distortion |
US5757229A (en) | 1996-06-28 | 1998-05-26 | Motorola, Inc. | Bias circuit for a power amplifier |
US6055418A (en) | 1996-07-05 | 2000-04-25 | Thomcast Communications, Inc. | Computer program product configured to control modular transmission system components |
US5949283A (en) | 1996-09-20 | 1999-09-07 | Spectrian | Adaptive digital predistortion linearization and feed-forward correction of RF power amplifier |
US6246865B1 (en) | 1997-02-04 | 2001-06-12 | Samsung Electronics Co., Ltd. | Device and method for controlling distortion characteristic of predistorter |
US6639050B1 (en) | 1997-07-21 | 2003-10-28 | Ohio University | Synthetic genes for plant gums and other hydroxyproline-rich glycoproteins |
US6552634B1 (en) | 1997-08-25 | 2003-04-22 | Frederick Herbert Raab | Wideband, minimum-rating filters and multicouplers for power amplifiers |
US5959499A (en) | 1997-09-30 | 1999-09-28 | Motorola, Inc. | Predistortion system and method using analog feedback loop for look-up table training |
US5936464A (en) | 1997-11-03 | 1999-08-10 | Motorola, Inc. | Method and apparatus for reducing distortion in a high efficiency power amplifier |
US5963549A (en) | 1997-12-10 | 1999-10-05 | L-3 Communications Corporation | Fixed wireless loop system having baseband combiner predistortion summing table |
US6400774B1 (en) | 1997-12-10 | 2002-06-04 | Matsushita Electric Industrial Co., Ltd. | Nonlinearity-caused distortion compensating system |
USRE42287E1 (en) | 1998-03-17 | 2011-04-12 | Pixar | Stochastic level of detail in computer animation |
US6741663B1 (en) | 1998-04-30 | 2004-05-25 | Nokia Corporation | Linearization method for amplifier, and amplifier arrangement |
US20020101937A1 (en) | 1998-06-26 | 2002-08-01 | Franklin P. Antonio | Predistortion technique for high power amplifiers |
US6240144B1 (en) | 1998-08-06 | 2001-05-29 | Samsung Electronics Co., Ltd. | Apparatus and method of linearizing a power amplifier in a mobile radio communication system |
US6301579B1 (en) | 1998-10-20 | 2001-10-09 | Silicon Graphics, Inc. | Method, system, and computer program product for visualizing a data structure |
US6275685B1 (en) | 1998-12-10 | 2001-08-14 | Nortel Networks Limited | Linear amplifier arrangement |
US6054896A (en) | 1998-12-17 | 2000-04-25 | Datum Telegraphic Inc. | Controller and associated methods for a linc linear power amplifier |
US7106806B1 (en) | 1999-06-30 | 2006-09-12 | Andrew Corporation | Reducing distortion of signals |
US6625429B1 (en) | 1999-07-02 | 2003-09-23 | Nec Corporation | Mobile radio communication apparatus |
US20020044014A1 (en) | 1999-07-13 | 2002-04-18 | Wright Andrew S. | Amplifier measurement and modeling processes for use in generating predistortion parameters |
US6697436B1 (en) | 1999-07-13 | 2004-02-24 | Pmc-Sierra, Inc. | Transmission antenna array system with predistortion |
US6731904B1 (en) * | 1999-07-20 | 2004-05-04 | Andrew Corporation | Side-to-side repeater |
US6246286B1 (en) | 1999-10-26 | 2001-06-12 | Telefonaktiebolaget Lm Ericsson | Adaptive linearization of power amplifiers |
US6751447B1 (en) | 1999-12-30 | 2004-06-15 | Samsung Electronics Cop., Ltd. | Adaptive digital pre-distortion circuit using output reference signal and method of operation |
US6242979B1 (en) | 2000-02-23 | 2001-06-05 | Motorola, Inc. | Linearization using parallel cancellation in linear power amplifier |
US6512417B2 (en) | 2000-05-11 | 2003-01-28 | Nortel Networks Limited | Linear amplifier arrangement |
US20020034260A1 (en) | 2000-09-15 | 2002-03-21 | Lg Electronics Inc. | Adaptive predistortion transmitter |
US6424225B1 (en) | 2000-11-27 | 2002-07-23 | Conexant Systems, Inc. | Power amplifier circuit for providing constant bias current over a wide temperature range |
US20020080891A1 (en) | 2000-12-27 | 2002-06-27 | Lg Electronics | Base station transmitter having digital predistorter and predistortion method thereof |
US20020101938A1 (en) | 2001-02-01 | 2002-08-01 | Masato Horaguchi | Predistortion type distortion compensation apparatus |
US6677870B2 (en) | 2001-02-21 | 2004-01-13 | Solid Technologies, Inc. | Device and method for compensating for nonlinearity of power amplifier with predistortion in IF band |
US20020187761A1 (en) | 2001-02-21 | 2002-12-12 | Solid Technologies, Inc. | Device and method for compensating for nonlinearity of power amplifier with redistortion in if band |
US6983025B2 (en) | 2001-04-11 | 2006-01-03 | Tropian, Inc. | High quality power ramping in a communications transmitter |
US7321636B2 (en) | 2001-05-31 | 2008-01-22 | Magnolia Broadband Inc. | Communication device with smart antenna using a quality-indication signal |
US20020186783A1 (en) | 2001-06-07 | 2002-12-12 | Motorola, Inc | Amplifier predistortion system and method |
US7035345B2 (en) | 2001-06-08 | 2006-04-25 | Polyvalor S.E.C. | Adaptive predistortion device and method using digital receiver |
US20020193085A1 (en) | 2001-06-15 | 2002-12-19 | Telefonaktiebolaget Lm Ericsson | Systems and methods for amplification of a communication signal |
US20040240585A1 (en) | 2001-06-15 | 2004-12-02 | John Bishop | Time alignment of signals |
US7158765B2 (en) | 2001-07-31 | 2007-01-02 | Agere Systems, Inc. | Method and apparatus for controlling power of a transmitted signal |
US7109998B2 (en) | 2001-10-03 | 2006-09-19 | Sun Microsystems, Inc. | Stationary semantic zooming |
US7103329B1 (en) | 2001-10-25 | 2006-09-05 | Rockwell Collins, Inc. | Adaptive feedback channel for radio frequency power amplifiers |
US20030095608A1 (en) | 2001-11-16 | 2003-05-22 | Koninklijke Philips Electronics N.V. | Transmitter with transmitter chain phase adjustment on the basis of pre-stored phase information |
US6703897B2 (en) | 2001-12-26 | 2004-03-09 | Nortel Networks Limited | Methods of optimising power amplifier efficiency and closed-loop power amplifier controllers |
US20050159117A1 (en) | 2002-01-15 | 2005-07-21 | Igor Bausov | Class-L power-output amplifier |
US7061314B2 (en) | 2002-02-01 | 2006-06-13 | Youngwoo Kwon | High linearity doherty communication amplifier with phase control |
US7248642B1 (en) | 2002-02-05 | 2007-07-24 | Andrew Corporation | Frequency-dependent phase pre-distortion for reducing spurious emissions in communication networks |
US7079818B2 (en) | 2002-02-12 | 2006-07-18 | Broadcom Corporation | Programmable mutlistage amplifier and radio applications thereof |
US6747649B1 (en) | 2002-03-19 | 2004-06-08 | Aechelon Technology, Inc. | Terrain rendering in a three-dimensional environment |
US20030179829A1 (en) | 2002-03-19 | 2003-09-25 | Motorola, Inc. | Method and apparatus using base band transformation to improve transmitter performance |
US20030179830A1 (en) | 2002-03-25 | 2003-09-25 | Eidson Donald B. | Efficient, high fidelity transmission of modulation schemes through power-constrained remote relay stations by local transmit predistortion and local receiver feedback |
US6985704B2 (en) | 2002-05-01 | 2006-01-10 | Dali Yang | System and method for digital memorized predistortion for wireless communication |
US20070241812A1 (en) | 2002-05-01 | 2007-10-18 | Dali Systems Co. Ltd. | High efficiency linearization power amplifier for wireless communication |
US20030207680A1 (en) * | 2002-05-01 | 2003-11-06 | Dali Yang | System and method for digital memorized predistortion for wireless communication |
US20050079834A1 (en) | 2002-05-31 | 2005-04-14 | Toru Maniwa | Table reference type predistorter |
US20040017859A1 (en) | 2002-07-25 | 2004-01-29 | Sills James A. | Transmitter with limited spectral regrowth and method therefor |
US7321635B2 (en) | 2002-08-16 | 2008-01-22 | Andrew Corporation | Linearization of amplifiers using baseband detection and non-baseband pre-distortion |
US7295819B2 (en) * | 2003-03-11 | 2007-11-13 | Andrew Corporation | Signal sample acquisition techniques |
US7064606B2 (en) | 2003-03-28 | 2006-06-20 | Andrew Corporation | High efficiency amplifier and method of designing same |
US7151913B2 (en) * | 2003-06-30 | 2006-12-19 | M/A-Com, Inc. | Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture |
US7042287B2 (en) | 2003-07-23 | 2006-05-09 | Northrop Grumman Corporation | System and method for reducing dynamic range and improving linearity in an amplication system |
US7259630B2 (en) | 2003-07-23 | 2007-08-21 | Andrew Corporation | Elimination of peak clipping and improved efficiency for RF power amplifiers with a predistorter |
US6963242B2 (en) | 2003-07-31 | 2005-11-08 | Andrew Corporation | Predistorter for phase modulated signals with low peak to average ratios |
US7109792B2 (en) | 2003-09-17 | 2006-09-19 | Andrew Corporation | Table-based pre-distortion for amplifier systems |
US7372918B2 (en) | 2003-09-30 | 2008-05-13 | Infineon Technologies Ag | Transmission device with adaptive digital predistortion, transceiver with transmission device, and method for operating a transmission device |
US7469491B2 (en) | 2004-01-27 | 2008-12-30 | Crestcom, Inc. | Transmitter predistortion circuit and method therefor |
US7193472B2 (en) | 2004-04-14 | 2007-03-20 | Mitsubishi Denki Kabushiki Kaisha | Power amplifier |
US7102442B2 (en) | 2004-04-28 | 2006-09-05 | Sony Ericsson Mobile Communications Ab | Wireless terminals, methods and computer program products with transmit power amplifier input power regulation |
US20050262498A1 (en) | 2004-05-20 | 2005-11-24 | Ferguson Alan L | Systems and methods for remotely modifying software on a work machine |
US20060012426A1 (en) | 2004-07-14 | 2006-01-19 | Raytheon Company | Performing remote power amplifier linearization |
US7104310B2 (en) | 2004-12-27 | 2006-09-12 | Hunter Automated Machinery Corporation | Mold making machine with separated safety work zones |
US20060217083A1 (en) * | 2005-03-22 | 2006-09-28 | Braithwaite Richard N | Rf power amplifier system employing an analog predistortion module using zero crossings |
US20060270366A1 (en) | 2005-05-24 | 2006-11-30 | Dmitriy Rozenblit | Dual voltage regulator for a supply voltage controlled power amplifier in a closed power control loop |
US20070075780A1 (en) | 2005-10-05 | 2007-04-05 | Enver Krvavac | Apparatus and method for adaptive biasing of a Doherty amplifier |
US7831221B2 (en) | 2005-12-13 | 2010-11-09 | Andrew Llc | Predistortion system and amplifier for addressing group delay modulation |
US20070171234A1 (en) | 2006-01-24 | 2007-07-26 | Roger Crawfis | System and method for asynchronous continuous-level-of-detail texture mapping for large-scale terrain rendering |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9712343B2 (en) | 2015-06-19 | 2017-07-18 | Andrew Wireless Systems Gmbh | Scalable telecommunications system |
US10271380B2 (en) | 2015-06-19 | 2019-04-23 | Andrew Wireless Systems Gmbh | Scalable telecommunications system |
US10887079B1 (en) | 2019-09-26 | 2021-01-05 | Corning Research & Development Corporation | Digital predistortion (DPD) timing alignment in a remote unit(s) for a wireless communications system (WCS) |
US11190230B1 (en) | 2020-05-29 | 2021-11-30 | Corning Research & Development Corporation | Wide bandwidth digital pre-distortion (DPD) in a remote unit(s) for a wireless communications system (WCS) |
US11677435B2 (en) | 2020-05-29 | 2023-06-13 | Corning Research & Development Corporation | Wide bandwidth digital pre-distortion (DPD) in a remote unit(s) for a wireless communications system (WCS) |
Also Published As
Publication number | Publication date |
---|---|
US20070241812A1 (en) | 2007-10-18 |
US8620234B2 (en) | 2013-12-31 |
US20200083914A1 (en) | 2020-03-12 |
CN101479956A (en) | 2009-07-08 |
US8064850B2 (en) | 2011-11-22 |
US20140179248A1 (en) | 2014-06-26 |
US20180097530A1 (en) | 2018-04-05 |
US9742446B2 (en) | 2017-08-22 |
CN101479956B (en) | 2013-07-31 |
US20090085658A1 (en) | 2009-04-02 |
US20150333710A1 (en) | 2015-11-19 |
US20120135695A1 (en) | 2012-05-31 |
US9054758B2 (en) | 2015-06-09 |
US10305521B2 (en) | 2019-05-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8693962B2 (en) | Analog power amplifier predistortion methods and apparatus | |
US8224266B2 (en) | Power amplifier predistortion methods and apparatus using envelope and phase detector | |
US20200358640A1 (en) | Modulation agnostic digital hybrid mode power amplifier system and method | |
US11418155B2 (en) | Digital hybrid mode power amplifier system | |
EP2143209B1 (en) | Digital hybrid mode power amplifier system | |
US8472897B1 (en) | Power amplifier predistortion methods and apparatus | |
US6677821B2 (en) | Distortion compensating apparatus | |
US20080111622A1 (en) | Hybrid Doherty Amplifier System and Method | |
US8736365B2 (en) | Broadband linearization module and method | |
US7486939B2 (en) | Apparatus for removing distortions created by an amplifier | |
EP2022179A1 (en) | High efficiency linearization power amplifier for wireless communication | |
US6904267B2 (en) | Amplifying device | |
JP2006094043A (en) | Transmission apparatus and communication apparatus | |
KR20180004314A (en) | Modulation agnostic digital hybrid mode power amplifier system and method | |
KR20140110992A (en) | Digital hybrid mode power amplifier system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: DALI SYSTEMS CO. LTD., CAYMAN ISLANDS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LIU, DONGTAI;YANG, DALI;ANDERSON, JAMES;SIGNING DATES FROM 20081125 TO 20081204;REEL/FRAME:022100/0225 Owner name: DALI SYSTEMS CO. LTD., CAYMAN ISLANDS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LIU, DONGTAI;YANG, DALI;ANDERSON, JAMES;REEL/FRAME:022100/0225;SIGNING DATES FROM 20081125 TO 20081204 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2551) Year of fee payment: 4 |
|
AS | Assignment |
Owner name: DALI RESEARCH (NORTHWIND) LLC, NEW YORK Free format text: SECURITY INTEREST;ASSIGNOR:DALI WIRELESS, INC.;REEL/FRAME:049846/0055 Effective date: 20190618 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2552); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY Year of fee payment: 8 |